Kinetic Spectrophotometric Determination of Copper by Flow Injection Analysis in Cationic Micellar Medium

Safavi, Afsaneh; Mirzaee, Mahdi; Nezhad, Mohammad Reza Hormozi; Saghir, Narges

doi:10.1081/sl-200042305

Cited by 7 publications

(4 citation statements)

References 12 publications

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“…The current kinetic method is simple and fast, and can be successfully used to determine copper at trace/ultra-trace levels in poor surface waters of humic and fulvic acid. The method has the advantages of low cost, a linear range of 50-fold, reproducibility, accuracy, and, most importantly, low DLs, comparable with the DLs obtained by the existing catalytic kinetic techniques for the determination of trace quantities of Cu(II) present in water samples [16][17][18][19][20][21][22][23][24][25][26][27]30 in Table 5. Furthermore, it has a reasonable reaction temperature and short reaction time compared to the other kinetic methods.…”

Section: Discussionmentioning

confidence: 97%

Extraction of phenolic compounds from melissa using microwave and ultrasound

Ince¹,

Şahin

Şümnü³

2013

Turkish Journal of Agriculture and Forestry

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Section: Discussionmentioning

confidence: 97%

Extraction of phenolic compounds from melissa using microwave and ultrasound

Ince¹,

Şahin

Şümnü³

2013

Turkish Journal of Agriculture and Forestry

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“…There are several examples of micellar effects upon the attack of nucleophile anions on uncharged substrates [23,24]. The enhancing effects of surfactants have been exploited in the application of a number of analytical kinetic methods [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Kinetics and mechanism of the ligand substitution reaction between aquapentacyanoruthenate(II) and 4-cyanopyridine in the presence of anionic surfactant micelles

Naik

Rastogi

Asthana

2010

Transition Met Chem

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The kinetics of ligand substitution between aquapentacyanoruthenate(II) ion, [Ru(CN) 5 H 2 O] 3-and 4-cyanopyridine (4-CNpy) has been investigated spectrophotometrically in the presence of anionic surfactant micelle, namely sodium dodecylsulphate (SDS) at 400 nm (k max of the intense yellow product [Ru(CN) 5 4-CNpy] 3-) under pseudo-first-order conditions using at least 10% excess of 4-CNpy over [Ru(CN) 5 H 2 O] 3-. The reaction was studied as a function of [Ru(CN) 5 H 2 O 3-], [4-CNpy], [SDS], pH, ionic strength and temperature, by varying each of these variables one at a time. The reaction exhibited overall second-order kinetics, being first order each in [4-CNpy] and [Ru(CN) 5 H 2 O 3-] over a wide concentration range.Variation of ionic strength of the medium had a significant negative effect on the rate. The SDS micelle, being negatively charged, does not reveal any regular effect except at or near its critical micelle concentration (c.m.c). The rate of reaction was measured at different temperatures, and the activation parameters were computed using Arrhenius and Eyring plots. A plausible mechanism consistent with the experimental results has been proposed.

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“…Because of the great importance of hydrazine, its accurate and economical determination is still a challenging research in analytical chemistry. Among several techniques that have been reported for the determination of hydrazine such as spectrophotometry [6], amperometry [7], potentiometry [3], titrimetry [8] and chemiluminescence [9], electrochemical techniques offer the opportunity for portable, economical, sensitive and rapid methodologies.…”

Section: Introductionmentioning

confidence: 99%